Newton's 2nd and 3rd Law

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 

• 40N 

• 10N 

• 70N

Tags

NGSS.MS-PS2-1

A 20 kg bike accelerates at 10 m/s².  what was the force

• 25 N

• 200 N

• 20 N

• 10 N

Tags

NGSS.MS-PS2-2

Which of Newtons laws  best explains why football teams have big, large, fast athletes.

• Gravity

• second law

• first law

• Third law

Tags

NGSS.HS-PS2-1

What law of motion does this picture represent?

• Newtons 1st law

• law of gravity 

• Newtons 4th law 

• Newtons 2nd law

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s². Determine the mass of the encyclopedia?

•  m = 3.0 kg

• m = 4.0 kg 

• m = 3.0 ml 

• m = 30.0 g

Tags

NGSS.MS-PS2-2

Pushing  a child on a swing is easier than pushing an adult on the same swing. 

• 1st Law 

• 2nd Law

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Newton's second law is applied as the formula _____

• Force = Mass X Acceleration

• Speed = distance / time

• a + b = c

• huh?

Tags

NGSS.MS-PS2-2

The formula for average speed is ______
hint: Miles/hour

• Speed = Distance / time 

• Speed = Distance X time

• Speed = ??? 

• something fast

Which of the following explains the difference between speed and velocity?

• One has motion, and the other does not.

• One has direction, and the other does not.

• One involves time, and the other does not.

• One involves acceleration, and the other does not.

For a force on an object there is an equal and opposite force.

• Newton’s first law of motion

• Newton’s second law of motion

• Newton’s third law of motion